In this capacity, Giammona oversees service to 16 million people throughout Northern and Central California and manages seven million square feet of facilities supporting more than 20,000 employees. She oversees billing, metering, revenue, call centers, local offices, account services, low-income offerings, customer programs including energy efficiency, solar, electric vehicle and demand response portfolios, and managing and operating PG&E's facilities. She is dedicated to the voice of the customer, improving service and the customer experience, and supporting PG&E's workforce across Northern and Central California.

A native of the Bay Area, Giammona joined PG&E in January 2012 as Vice President, Customer Service. In this role, she oversaw initiatives to improve customer experience and satisfaction through upgrades to customer communications and contact centers as well as creating more personalized options for customers through online and mobile platforms. She drove PG&E's initiative to form regional leadership teams throughout its service area to better understand and address the local needs of customers.

Previously, Giammona was Regional Vice President of Customer Care at Comcast, where she led customer sales, service and experience for 5 million households in California. Also at Comcast, Giammona held positions managing field services, engineering and construction, government relations and direct sales as well as call center design, development and effectiveness programs.

Giammona also held executive positions at United Airlines, leading teams in customer service, business and airport operations, sales, and training and development.

She currently serves on the executive board for the Make-A-Wish Foundation, Greater Bay Area.